WASHINGTON — Minimum standards for ever-shrinking airplane seat sizes. A ban on airlines bumping ticketed passengers who have already boarded an aircraft. A prohibition on in-flight voice calls, including those made over Wi-Fi.

The must-pass legislation, which won overwhelming bipartisan support, is still a ways from President Donald Trump's desk. The Senate is expected to take up its own version in the coming weeks, meaning that the two bills will have to be reconciled.

The far-reaching measure — closely watched by Dallas-based Southwest Airlines and Fort Worth-based American Airlines — is probably most notable for what isn't in it.

3. Safety first

Fliers are supposed to get off a plane within 90 seconds in an emergency situation. Some stakeholders have questioned if that's really feasible, in part because more seats on the plane means more passengers have to figure out how to navigate toward the exits.

4. Fair fares?

The change would come with a caveat: Airlines would have to disclose the tax amount via an online link or popup. But it would still effectively overturn a U.S. Transportation Department rule that was cheered by consumer advocates and opposed by the airlines.

Those taxes add up, which partly explains the carriers' ire. A one-way Southwest flight from Dallas to D.C. next month, for instance, is now being advertised at $173, including $33 in taxes.

5. In-cabin animals

Emotional support animals, also known as comfort pets, have become a major point of contention in the skies, particularly since the existing rules leave plenty of opportunities for passengers to game the system in an attempt to avoid a fee to bring Fido on board.

Some 751,000 comfort pets flew on U.S. airlines last year, an 80 percent increase from the prior year, according to an informal survey by the industry group Airlines for America.